The upcoming election has brought threats of political violence against judges and election workers. Rachel Kleinfeld, senior fellow at the Carnegie Endowment for International Peace, joins us. And, new research suggests the virus that causes chickenpox and shingles may be linked to dementia. STAT's Megan Molteni explains. Then, Ukulele virtuoso Jake Shimabukuro has a new album out called "Blues Experience." He teamed up with a founding member of Fleetwood Mac, Mick Fleetwood, on it and joins us to talk about his music.

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